-How do you usually go to work, Miss Green?--I usually go to work ___ foot, but sometimes __ my bike.
I think English is as _______ as math.
________ a walk is good for your health.
This tall building has _______ floors. And Tony lives on the ______ floor.
My bicycle doesn’t work. I’ll ask Uncle Wang __________.
—— Would you like ________ camping with me ? —— I’d like to. But I’m busy ______ my homework.